Once he has determined that their productivity has been decreasing ever since they broke up, Jimmy encourages Dave and Lisa to reunite, or at least to start having sex again. Though unwilling to be pressured, Lisa gets Dave to agree that Jimmy's proposal may have merit. Meanwhile, as Bill interviews documentary filmmaker Ken Burns for Catherine's old job, Matthew gets a toy car for his birthday. As Jimmy works to create a romantic mood, Lisa and Dave agree to give him a chance. Failing to restart their sexual relationship, Jimmy lets Bill take a crack at it. But when he tries jealousy as a way of encouraging his sexual interest in Lisa, Dave refuses to take the bait. Meanwhile, an accident with his new toy car leaves Matthew despondent, until the woman he hit agrees to a date. Deciding that it might be just sex that motivates Dave and Lisa, Jimmy hires a pair of beautiful but incompetent assistants. As a result, Dave and Lisa decide that things have gotten out of hand. After reprimanding Bill for fabricating stories about having sex with her, Lisa then attacks Dave for believing them. And when Jimmy notices another spike in their productivity, he realizes that it happened when Dave and Lisa were arguing. Finally, as Matthew manages to get a date despite having lost his car, Dave and Lisa give their bickering a break until the following day.